5T_' T\(iK smh;si;i;k(; 



E n (1 o p o il i t <•: Tlic postorinr distal luistlc mi tlir lirst joint is soiiu'wIkiI sliortcr iImii 

 tlu> bristle on the ciul joint. 



Sixth limb: — IIh' iiostciior fA<x{- is fairiv striiiifht or soinct iiiics even slightly 

 concave, hut tho posterior ventral corner is ratiici l)rtia(ll\ niundid. Tluic arc 22 — 24 ])ostprior 

 and seven anterior voiitra! bristles. Two Ijiistlcs arc (Icvclojicd un tlic aiitciior c(lfj;c ol tlic liiul). 



S c V c 11 t h 1 i 111 b: — Very like the correspond in<; limb in A. Griuialdi. in exceptional 

 cases it has only eleven cleaning bristles. 



The I" u r c a is armed with ten claws, ul which the seven or eight distal ones may be 

 termed main claws. The two anterior main claws are equipped with ventral spines right to 

 their bases, the proximal ones of these spines are, however, oi the same type as those situated 

 more distallv. The two posterior secondary claws aic annulated. 



The lateral eyes an> well (levelo])C(i. The median eye is bare. 



Male: — 



Shell: — Length, 2,42 mm.; length : height about 2:1; length to breadth about 

 2,2.") : 1. Seen from the side (fig. 3) it is of about the same type as that of the male 

 of A. Grimaldi, but, as is shown by the figures given above, it is somewhat higher relatively. 

 The anterior and posterior arcuations of the dorsal margin are somewhat more defined. The 

 part beneath the incisur dominates somewhat over the part above it. The posterior part of 

 the shell is cut off rather abruptly, the posterior margin is rather slightly rounded, the posterior 

 dorsal corner is somewhat more distinct than in A. Grimaldi. Seen from below (fig. 4) it is of 

 the same type as in the species just mentioned. The wreath of hairs round the posterior part 

 of the shell is rather dense. Seen from inside: Medial bri.stles: These are much the same 

 as in the female, but somewhat more sparse; the short bristles that are interspersed among 

 the longer bristles seem to be considerably more numerous, . compared with the latter than in 

 the female. Apart from this the shells of the two sexes are alike. 



First antenna (fig. 8) : — For the proportions between the joints see the description 

 of the genus. This antenna is very like that of A. Grimaldi; cf. fig. 11 of this species. We may 

 note: Of the six anterior bristles on the third joint no. 5, like this bristle in the above-mentioned 

 male, but contrary to the female, is armed with long, stifi secondary bristles arranged fairly 

 well on all sides. The a-claw is finely pectinated and is somewhat shorter than the anterior 

 side of the sixth joint. The c- and f-bristles are subequal and about Va times as long as the 

 sheU (3,3 to 3,5 mm. was observed); 33 — 34 sensorial filaments were observed on the c-bristle, 

 31—32 on the f-bristle. 



Second antenna: — The exopodite is considerably longer than in the female, 

 the two proximal joints especially being very much lengthened. The proportion between the 

 joints is shown by the following figures: 



S (shell 2,42 mm. long) = I : II : (III— IX) ^ 47 : 16 : 26. 



For the sake of comparison the corresponding figures (measured on the same scale) for 

 the female second antenna may be given: 



$ (shell about 2,2 mm. long) = I : 11 : (III— IX) — 29 : 6 : 21. 



